T-6A INSTRUMENT NAVIGATION
When the approach controller picks you up on his scope, his task is to vector your aircraft to a
suitable position and altitude for handoff to the GCA final controller. On this type of approach,
you could be vectored to any one of four positions relative to the GCA final: Downwind, Base
leg, Semi-final (dogleg), or Final itself.
1. Upon receiving initial vector, direct the IP to turn as appropriate. Maintain 200 KIAS until
transition to BAC. If a descent is required, report leaving present altitude and conduct an enroute
descent to the assigned altitude.
2. Set up the appropriate NAVAIDs to maintain situational awareness and to provide for a
backup approach, if available.
Monitor destination NAVAIDs as an aid in orientation as well as a
means of preparation for the lost communication contingency.
You should select a suitable backup approach (ILS, LOC, GPS,
VOR). This will also provide orientation about the airfield. The
controller will advise you of the aircraft's position at least once
before starting final.
Tune and identify the station.
Tune the proper frequency.
Identify the station with Morse Code.
Monitor: Navigation information is reliable only when:
A fail indicator (red X) is not displayed on the EHSI.
The NAVAID identifier is received.
The aircraft is within the usable range of the equipment.
Confirm: Confirm the correct source for the bearing pointer and CDI.
Twist the runway heading into the CDI.
4. Follow the radar vectors assigned by Approach Control to intercept the FAC. Turns should
be performed at standard rate until advised otherwise by the GCA controller.
5. Transition to BAC. Direct the pilot to slow and take BAC when within 13 DME and
aircraft heading is within 90° of runway heading.
5-54 TERMINAL PROCEDURES